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Patent US2449056A successfully refreshed from Google Patents.
US2449056A
Expired / Lapsed
US
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Safety scaffold pole
Assignee: Individual
•
Filing: 1945-07-11
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Granted: 1948-09-14
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Expires: 1965-07-11
Abstract
No abstract record available.
Inventors
- 👤 Howard H Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:26
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/02; E04G1/12; Y; Y10; Y10T; Y10T403/00; Y10T403/57; Y10T403/5761; Y10T403/5766; Y10T403/5781
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-14 | 1952-03-15 | 1952-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-14 | 1956-03-15 | 1956-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-14 | 1960-03-15 | 1960-09-14 | $7700.00 | Window Closed / Lapsed |